Issue 28491. Add support for UnlinkedExprOperation.pushSuper even though it is not allowed.

pkg/analyzer/lib/src/summary/summarize_const_expr.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library serialization.summarize_const_expr;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/element/type.dart' show DartType;
 import 'package:analyzer/src/summary/format.dart';
@@ skipping 370 matching lines @@
     } else if (expr is AsExpression) {
       isValidConst = false;
       _serialize(expr.expression);
       references.add(serializeTypeName(expr.type));
       operations.add(UnlinkedExprOperation.typeCast);
     } else if (expr is IsExpression) {
       isValidConst = false;
       _serialize(expr.expression);
       references.add(serializeTypeName(expr.type));
       operations.add(UnlinkedExprOperation.typeCheck);
+    } else if (expr is SuperExpression) {
+      operations.add(UnlinkedExprOperation.pushSuper);
     } else if (expr is ThisExpression) {
       operations.add(UnlinkedExprOperation.pushThis);
     } else if (expr is ThrowExpression) {
       isValidConst = false;
       _serialize(expr.expression);
       operations.add(UnlinkedExprOperation.throwException);
     } else if (expr is AwaitExpression) {
       isValidConst = false;
       _serialize(expr.expression);
       operations.add(UnlinkedExprOperation.await);
@@ skipping 261 matching lines @@
     if (typeArguments == null) {
       ints.add(0);
     } else {
       ints.add(typeArguments.arguments.length);
       for (TypeAnnotation type in typeArguments.arguments) {
         references.add(serializeTypeName(type));
       }
     }
   }
 }